Direct fabrication and nitridation of a high-quality NaTaO3 crystal layer onto a tantalum substrate

Sayaka Suzuki, Katsuya Teshima, Kunio Yubuta, Shun Ito, Yosuke Moriya, Tsuyoshi Takata, Toetsu Shishido, Kazunari Domen, Shuji Oishi

研究成果: Contribution to journalArticle査読

27 被引用数 (Scopus)

抄録

High-quality nano-/microtextured NaTaO3 crystal layers were successfully fabricated on Ta substrates at a relatively low temperature using molten NaNO3 as the starting material. Ta substrates coated with an aqueous NaNO3 solution were heated at 500 °C in an infrared heating furnace, whereupon Ta reacted with NaNO3 (which acted as both the Na source and the flux) to afford a layer of densely packed cubic NaTaO3 crystals that adhered readily onto the substrate. Nitridation of the NaTaO3 crystal layer by heating at 850 °C under an NH 3 flow yielded a Ta3N5 crystal layer. The crystals retained their original size and shape but became highly porous after nitridation. TEM observations clearly indicated that the porous cubic crystals consisted of highly crystalline nanoparticles.

本文言語英語
ページ(範囲)7178-7183
ページ数6
ジャーナルCrystEngComm
14
21
DOI
出版ステータス出版済み - 11 7 2012
外部発表はい

All Science Journal Classification (ASJC) codes

  • 化学 (全般)
  • 材料科学(全般)
  • 凝縮系物理学

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